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NDA 2024 · PYQ · Biochemistry / Photosynthesis pigments · easy

Leaves of most plants appear green because the chlorophyll present in it:

  1. A.absorbs red and blue light while reflecting green light.✓ Correct
  2. B.absorbs green light only.
  3. C.absorbs green light while reflecting red and blue light.
  4. D.reflects red light and absorbs blue and green light.

Explanation

Chlorophyll molecules absorb light primarily in the red (around 660 nm) and blue (around 430 nm) regions of the visible spectrum and use this energy for photosynthesis. Green light (around 500–570 nm) is poorly absorbed and is mostly reflected or transmitted by the chlorophyll. The reflected green light reaches our eyes, which is why leaves appear green. Therefore, the correct statement is that chlorophyll absorbs red and blue light while reflecting green light.
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